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乐高 EV3 实验04 - 颜色传感器巡线 · App Inventor 2 中文网
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命名
关键属性
按钮
按钮_识别颜色
文本「读一次颜色」
标签
标签_颜色
字号 28，文本「–」
标签
标签_反光
文本「反光值：–」
按钮
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How to solve “Could not establish trust relationship for the SSL/TLS secure channel with authority”
Really thought I had this issue fixed, but it was only disguised before.
17 Answers
1...
How to printf uint64_t? Fails with: “spurious trailing ‘%’ in format”
I wrote a very simple test code of printf uint64_t:
3 Answers
3
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Windows 7, 64 bit, DLL problems
...++ 32-bit executable on my Windows 7 64-bit development box that also has all those Microsoft applications (Visual Studio 2008 + 2010, TFS, SDK, Microsoft Office)...
And it's still running just fine.
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What's the best way to inverse sort in scala?
...way of changing the sign, if you sort by some numeric value
list.sortBy(- _.size)
More generally, sorting may be done by method sorted with an implicit Ordering, which you may make explicit, and Ordering has a reverse (not the list reverse below)
You can do
list.sorted(theOrdering.reverse)
If...
C/C++获取Windows的CPU、内存、硬盘使用率 - C/C++ - 清泛网 - 专注C/C++及内核技术
...率1.获取Windows系统内存使用率 Win 内存 使用率 DWORD getWin_MemUsage(){MEMORYSTATUS ms;::GlobalMemoryStatus(&ms);return ms.d...1.获取Windows系统内存使用率
//Win 内存 使用率
DWORD getWin_MemUsage()
{
MEMORYSTATUS ms;
::GlobalMemoryStatus(&ms);
return ms.dwMe...
App Inventor 2 条码与二维码教程 - 生成、扫描与实战应用 · App Inventor 2 中文网
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组件面板 → Sensors → **BarcodeScanner`
when 按钮_扫描.Click() {
条码扫描器1.DoScan()
}
when 条码扫描器1.AfterScan(结果, 格式) {
标签_结果.Text = join("结果：", 结果)
标签_格式.Text = join("格式：", 格式)
}
支持的条码...
How do I ignore files in a directory in Git?
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This is actually a copy-paste from the git documentation
– mcont
Aug 17 '18 at 10:00
1
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How do I use CSS in Django?
...igure out static files for the life of me. then, change django version installed, and voila. that was literally all i had to do because apparently i was looking at docs for the wrong version.
– Josh Brown
Sep 20 '13 at 3:56
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Is double square brackets [[ ]] preferable over single square brackets [ ] in Bash?
...ruct in the Korn shell
² but fails for some values of a or b (like + or index) and does numeric comparison if a and b look like decimal integers. expr "x$a" '<' "x$b" works around both.
³ and also fails for some values of a or b like ! or (.
⁴ in bash 3.2 and above and provided compatibil...